postmodern/chruby — pull request #207 by halostatue (2013-09-26 15:09:59+00:00)
Title: Rehash whenever Ruby changes.

If changing to a Ruby that has different gems with binaries, the shell does not always recognize those changes, e.g., :

```
% pry
zsh: correct 'pry' to 'pr' [nyae]? n
```

chruby_reset() does the right thing by rehashing; this change does the same for chruby_use().